66666673367 has 8 divisors (see below), whose sum is σ = 76195525536. Its totient is φ = 57139081632.

The previous prime is 66666673363. The next prime is 66666673369. The reversal of 66666673367 is 76337666666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66666673367 - 2² = 66666673363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66666673363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198908 + ... + 415809.

It is an arithmetic number, because the mean of its divisors is an integer number (9524440692).

Almost surely, 2^66666673367 is an apocalyptic number.

66666673367 is a deficient number, since it is larger than the sum of its proper divisors (9528852169).

66666673367 is a wasteful number, since it uses less digits than its factorization.

66666673367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630217.

The product of its digits is 123451776, while the sum is 62.

The spelling of 66666673367 in words is "sixty-six billion, six hundred sixty-six million, six hundred seventy-three thousand, three hundred sixty-seven".